PHP MySQL - Stilson.net

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• CONTENTSwww.it-ebooks.infoDetermining the Length of a String ...................................................................................................... 206Comparing Two Strings ........................................................................................................................ 206Manipulating String Case ..................................................................................................................... 209Converting Strings to and from HTML .................................................................................................. 211Alternatives for Regular Expression Functions..............................................................216Padding and Stripping a String............................................................................................................. 223Counting Characters and Words........................................................................................................... 225Taking Advantage of PEAR: Validate_US .......................................................................227Installing Validate_US........................................................................................................................... 227Using Validate_US ................................................................................................................................ 228Summary .......................................................................................................................228• Chapter 10: Working with the File and Operating System..................................229Learning About Files and Directories.............................................................................230Parsing Directory Paths........................................................................................................................ 230Calculating File, Directory, and Disk Sizes ........................................................................................... 232Determining Access and Modification Times ....................................................................................... 235Working with Files .........................................................................................................236The Concept of a Resource................................................................................................................... 237Recognizing Newline Characters.......................................................................................................... 237Recognizing the End-of-File Character................................................................................................. 237Opening and Closing a File ................................................................................................................... 237Reading from a File .............................................................................................................................. 239Writing a String to a File....................................................................................................................... 246Moving the File Pointer......................................................................................................................... 247Reading Directory Contents.................................................................................................................. 247Executing Shell Commands ...........................................................................................249System-Level Program Execution..................................................................................251Sanitizing the Input............................................................................................................................... 251xii
www.it-ebooks.info• CONTENTS<strong>PHP</strong>’s Program Execution Functions .................................................................................................... 252Summary .......................................................................................................................255• Chapter 11: PEAR................................................................................................257The Power of PEAR: Converting Numeral Formats ........................................................257Installing and Updating PEAR ........................................................................................258Installing PEAR ..................................................................................................................................... 258PEAR and Hosting Companies .............................................................................................................. 260Updating PEAR...................................................................................................................................... 260Using the PEAR Package Manager ................................................................................260Viewing an Installed PEAR Package ..................................................................................................... 261Learning More about an Installed PEAR Package................................................................................. 261Installing a PEAR Package.................................................................................................................... 262Including a Package within Your Scripts.............................................................................................. 264Upgrading Packages............................................................................................................................. 264Uninstalling a Package ......................................................................................................................... 265Downgrading a Package....................................................................................................................... 266Introducing Pyrus...........................................................................................................266Installing Pyrus..................................................................................................................................... 266Summary .......................................................................................................................267• Chapter 12: Date and Time .................................................................................269The Unix Timestamp ......................................................................................................269<strong>PHP</strong>’s Date and Time Library .........................................................................................270Validating Dates.................................................................................................................................... 270Formatting Dates and Times ................................................................................................................ 271Converting a Timestamp to User-Friendly Values ................................................................................ 275Working with Timestamps.................................................................................................................... 276Date Fu ..........................................................................................................................277Displaying the Localized Date and Time............................................................................................... 277xiii
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Page 31 and 32: www.it-ebooks.infoAbout the Author
Page 33 and 34: www.it-ebooks.info•Acknowledgment
Page 35 and 36: www.it-ebooks.info• INTRODUCTIONC
Page 37 and 38: www.it-ebooks.infoC H A P T E R 1
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www.it-ebooks.infoC H A P T E R 3
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PHP MySQL - Stilson.net

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